1) 0,2x=-1
x=-1/0,2
х=-5
2) 2x+1=3x-x
2x – 3x + x = – 1
0x = -1
уравнение решений не имеет
3) 5-x=2x+2
– x – 2x = 2 – 5
-3x = -3
x = 1
4) (5x-3)+(7x-4)=8-(15-11x)
5x – 3 + 7x – 4 = 8 – 15 + 11x
5x + 7x – 11x = – 15 + 8 + 4 + 3
x = 0
1) 0,2x=-1
x=-1/0,2
х=-5
2) 2x+1=3x-x
2x – 3x + x = – 1
0x = -1
уравнение решений не имеет
3) 5-x=2x+2
– x – 2x = 2 – 5
-3x = -3
x = 1
4) (5x-3)+(7x-4)=8-(15-11x)
5x – 3 + 7x – 4 = 8 – 15 + 11x
5x + 7x – 11x = – 15 + 8 + 4 + 3
x = 0